Neville had woken up to find that Harry was not in the house. His Gran and him figured that Harry had just gone for a walk. They began to worry when they did not see him for dinner, but they did not go in search for him. It was thought that Harry would need some space beacuse of the large number of people he lost in the last battle. They found out where Harry was when they opened the evening edition of the Daily Prophet

"THE BOY-WHO-LIVED FOUND DEAD IN BATTLE OF HOGWARTS CEMETERY"